deluge wrote:I have a few answers, do you have any real questions?
Why do we have to guess the right questions? If you have useful info, why don't you just share it with us? That's what these forums are all about.
Sorry, I didn't mean to insult anyone. Here's what I know, for what it's worth:
Two Clutch Systems - It has two geared shafts and one driven shaft. It also has two clutches. The gears on shaft "A" are 1, 3, 5 and the gears on shaft "B" are 2, 4, 6, and these shafts are parallel. The odd and even gears are matched. The chosen gear is powering the driven shaft while the other gear is along for the ride.
In first gear, clutch "A" is engaged on shaft "A" while clutch "B" is disengaged on shaft "B". So, shaft “A” is moving at its pace based on the ratio of gear one, and is powering the driven shaft.
Shaft “B” is moving at a faster pace than "A" based on the ratio of gear two, but is not driving anything. Shifting occurs, clutch “A” disengages and clutch “B” engages. Gear two is now powering the driven shaft.
Seamless shifting involves one gear shaft and one clutch. The earliest systems had 3 pairs of sliding bullets that moved out of the first gear dog and into the second gear dog. The "A" bullet would slide out of the first gear dog at precisely the same time that the "B" bullet would slide into the second gear dog. The shape of the bullets allowed one to disengage while the other positively engaged. The torque interruption necessary to facilitate this unloading and loading was milliseconds.
The newest systems are said to have rings rather than bullets..
On the other hand, constant velocity transmissions are similar to the derailleur on a multi-speed bicycle. A belt driven cone changes output speed as the belt moves down the cone through unlimited gear ratios. Banned!
If I knew I was going to live this long, I would have taken better care of myself.